Fire and rain prevention device and method for engine exhaust system

Abstract

The present invention relates to a fire and rain prevention device and method for an engine exhaust system, belonging to the field of automobile protection technology. The device comprises a sleeve, a rain detection module, a rain cap, a fire detection module, a fire prevention module, a first drive module, a second drive module and a controller; the controller determines the opening direction of the rain cap according to a wind vane, and determines the opening size of the rain cap according to detection information of a rain sensor and a gas flow sensor, thereby preventing rainwater from entering the exhaust pipe while ensuring normal exhaust, improving the service life of the exhaust pipe and ensuring normal use of the vehicle; in addition, the controller in the present invention drives the second cylinder to operate according to information detected by the combustible gas detector and the temperature sensor, thereby driving the fire prevention handle to operate, thereby preventing sparks carried in the exhaust gas to be discharged from being accidentally discharged into the atmosphere with a high concentration of combustible gas, thereby avoiding causing fire accidents.

Description

Technical Field

[0001] This invention belongs to the field of automotive protection technology, specifically relating to a fireproof and rainproof device and method for an engine exhaust system. Background Art

[0002] The vehicle exhaust system is a system that collects and discharges the exhaust gases produced by the engine. It generally consists of an exhaust pipe, a catalytic converter, an exhaust temperature sensor, and a muffler, and can reduce exhaust pollution and noise.

[0003] Meanwhile, with the booming development of the industrial economy, the demand for oil and natural gas is increasing, leading to the gradual emergence of numerous oil and gas extraction areas and the construction of a series of processing plants around crude oil. The exploration, extraction, and transportation of oil and gas resources inevitably require the use of internal combustion engine vehicles. These vehicles, typically equipped with fuel or gas engines, operate in flammable and explosive areas. If the high-temperature sparks in the vehicle exhaust are not effectively controlled, it could potentially trigger major safety accidents, causing incalculable casualties and economic losses.

[0004] Existing vehicles operating in flammable and explosive areas have simple fire-resistant components in their exhaust systems. These components include a fire-resistant cap installed inside the exhaust pipe, which consists of an annular cap body fixed to the pipe wall and a flame-arresting mesh fixed inside the annular cap body. The flame-arresting mesh arches towards the opposite direction of the exhaust pipe outlet, forming a dome-shaped concave portion of the cap body. In use, the fire-resistant cap separates the exhaust pipe inlet and outlet, ensuring that the exhaust gas flowing through the fire-resistant cap is filtered by the flame-arresting mesh, preventing sparks or fire from entering the exhaust pipe and reducing the risk of sparks or fire from entering the exhaust pipe. The exhaust fumes contained sparks or embers. The fireproof component has a complex structure and, being purely mechanical, cannot be intelligently controlled, requiring manual operation by the driver, which causes inconvenience. In addition, the exhaust systems of vehicles operating in flammable and explosive areas do not have rainproof measures. When it rains, because the exhaust pipe outlet is vertically upward and lacks rainproof measures, rainwater can enter the pipe and may even enter the generator, affecting the normal operation of the vehicle. This is a shortcoming of the existing technology.

[0005] In view of this, it is very necessary to provide a fireproof and rainproof device and method for an engine exhaust system to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as the need for manual intervention in fireproof components of vehicle exhaust systems in vehicles operating in flammable and explosive areas, which causes inconvenience to drivers, and the lack of rainproof measures allowing rainwater to enter the exhaust pipe and even the generator, affecting the normal use of the vehicle. This invention provides a fireproof and rainproof device and method for engine exhaust systems to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] In a first aspect, the present invention provides a fireproof and rainproof device for an engine exhaust system. The engine exhaust system includes an engine exhaust pipe bracket and an engine exhaust pipe. The engine exhaust pipe is fixed on the engine exhaust pipe bracket. One end of the engine exhaust pipe is connected to the exhaust port of the engine, and the other end of the engine exhaust pipe is connected to the atmosphere. The fireproof and rainproof device includes a sleeve, a rainproof detection module, a rainproof cap, a fireproof detection module, a fireproof module, a first drive module, a second drive module, and a controller.

[0009] The sleeve is fitted onto the outside of the engine exhaust pipe;

[0010] A first rain cap bracket is fitted around the sleeve at the exhaust port of the engine exhaust pipe. A second rain cap bracket is hinged to one end of the first rain cap bracket. A rain cap is installed on one end of the second rain cap bracket. The other end of the second rain cap bracket is connected to a fireproof module located below the first rain cap bracket through a first drive module.

[0011] Both the rainproof detection module and the fireproof detection module are connected to the input terminal of the controller. The output terminal of the controller is connected to the rainproof cap through the first drive module, and the output terminal of the controller is also connected to the fireproof module through the second drive module.

[0012] In one embodiment, the fireproof module includes a fireproof cover and a fireproof handle. The fireproof cover is located below the first rainproof cover bracket, and the fireproof handle is located inside the engine exhaust pipe inside the fireproof cover. The fireproof handle is connected to the output terminal of the controller through a second drive module.

[0013] In one embodiment, the rain detection module includes a rain sensor and a gas flow sensor. The rain sensor is mounted on the second rain cap bracket and is used to detect the amount of precipitation in the external environment. The gas flow sensor is mounted below the fireproof cover and is used to detect the exhaust volume of the engine. Both the rain sensor and the gas flow sensor are connected to the input terminal of the controller.

[0014] In one embodiment, the fire detection module includes a combustible gas detector and a temperature sensor. The combustible gas detector is mounted on the engine exhaust pipe bracket and is used to detect the concentration of combustible gas in the external environment. The temperature sensor is mounted on the fireproof cover and is used to detect the temperature inside the engine exhaust pipe. Both the combustible gas detector and the temperature sensor are connected to the input terminal of the controller.

[0015] In one embodiment, the first drive module includes an air source, a first electronically controlled valve, and a first cylinder;

[0016] The bottom of the first cylinder is mounted at an angle on the fireproof cover. The piston rod of the first cylinder is connected to the second rainproof cap bracket. The first cylinder is also connected to the air source through the first air supply pipe. The first electronically controlled valve is installed on the first air supply pipe.

[0017] In one embodiment, the second drive module includes a second electronically controlled valve and a second cylinder;

[0018] The second cylinder is located inside the engine exhaust pipe at the fireproof cover. The piston rod of the second cylinder is connected to the fireproof handle. The second cylinder is also connected to the air source through the second air supply pipe. The second electronically controlled valve is installed on the second air supply pipe.

[0019] In one embodiment, a wind vane is also included, which is mounted on the engine exhaust pipe bracket and is also connected to the input of the controller.

[0020] In one embodiment, a fixed gear and a rotary motor are also included. The fixed gear is fixedly installed on the periphery of the engine exhaust pipe below the sleeve. A rotary gear is fixed on the output shaft of the rotary motor. The rotary gear and the fixed gear are meshed and connected. The rotary motor is also connected to the output end of the controller.

[0021] Secondly, the present invention provides a fireproof and rainproof method for an engine exhaust system, comprising:

[0022] The rain detection module, fire detection module, and wind vane are activated to detect the operating information of the engine exhaust system and external environmental information, and the information is uploaded to the controller.

[0023] The controller determines whether the sleeve needs to be rotated based on external environmental information. If so, the controller drives the rotary motor to rotate the sleeve to the target position.

[0024] The controller controls the opening of the rain cap through the first drive module and controls the fireproof module to operate through the second drive module, based on the received operating information of the engine exhaust system and external environment information.

[0025] In one embodiment, the wind vane detects the wind direction information at the location of the engine exhaust system. Based on the wind direction information, the controller drives a rotary motor to rotate the sleeve to the target position to adjust the opening direction of the rain cap and make the engine exhaust direction downwind.

[0026] The beneficial effects of this invention are as follows: the controller in this invention determines the opening direction of the rain cap based on the wind vane, and determines the opening size of the rain cap based on the detection information of the rain sensor and the gas flow sensor. This prevents rainwater from entering the exhaust pipe while ensuring normal exhaust, thereby improving the service life of the exhaust pipe and ensuring the normal use of the vehicle. In addition, the controller in this invention drives the second cylinder to operate based on the information detected by the combustible gas detector and the temperature sensor, which in turn drives the fireproof handle to operate, preventing sparks carried in the exhaust gas from being accidentally discharged into the atmosphere with a high concentration of combustible gases, thus avoiding a fire accident.

[0027] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0028] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0029] Figure 1 This is a schematic diagram showing the relationship between the devices in this invention.

[0030] Figure 2 This is a schematic diagram of the device in this invention.

[0031] Figure 3 This is a flowchart illustrating the method of the present invention.

[0032] 1 is the engine exhaust pipe, 11 is the engine exhaust pipe bracket, 2 is the sleeve, 3 is the rainproof detection module, 31 is the rain sensor, 32 is the gas flow sensor, 33 is the wind vane, 34 is the fixed gear, 35 is the rotary motor, 41 is the rain cap, 42 is the first rain cap bracket, 43 is the second rain cap bracket, 5 is the fire detection module, 51 is the combustible gas detector, 52 is the temperature sensor, 6 is the fireproof module, 61 is the fireproof cover, 62 is the fireproof handle, 7 is the first drive module, 71 is the air source, 72 is the first electronic control valve, 73 is the first cylinder, 8 is the second drive module, 81 is the second electronic control valve, 82 is the second cylinder, and 9 is the controller. DETAILED DESCRIPTION

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation methods.

[0034] like Figure 1 and Figure 2 As shown, the present invention provides a fireproof and rainproof device for an engine exhaust system. The engine exhaust system includes an engine exhaust pipe bracket and an engine exhaust pipe. The engine exhaust pipe is fixed on the engine exhaust pipe bracket. One end of the engine exhaust pipe is connected to the engine exhaust port, and the other end of the engine exhaust pipe is connected to the atmosphere.

[0035] The fire and rain protection device includes a sleeve, a rain detection module, a rain cap, a fire detection module, a fire protection module, a first drive module, a second drive module, and a controller. The sleeve is fitted around the engine exhaust pipe. A first rain cap bracket is fitted around the sleeve at the exhaust port of the engine exhaust pipe. A second rain cap bracket is hinged to one end of the first rain cap bracket. A rain cap is installed at one end of the second rain cap bracket. The other end of the second rain cap bracket is connected to the fire protection module located below the first rain cap bracket via the first drive module. Both the rain detection module and the fire detection module are connected to the input terminal of the controller. The output terminal of the controller is connected to the rain cap via the first drive module. The output terminal of the controller is also connected to the fire protection module via the second drive module. The controller is installed in the driver's cab.

[0036] Specifically, the fireproof module includes a fireproof cover and a fireproof handle. The fireproof cover is located below the first rainproof cover bracket, and the fireproof handle is located inside the engine exhaust pipe inside the fireproof cover. The fireproof handle is connected to the output terminal of the controller through the second drive module.

[0037] The rain detection module includes a rain sensor and a gas flow sensor. The rain sensor is mounted on the second rain cap bracket and is used to detect the amount of precipitation in the external environment. The gas flow sensor is mounted below the fireproof cover and is used to detect the engine's exhaust volume. Both the rain sensor and the gas flow sensor are connected to the input terminal of the controller.

[0038] The fire detection module includes a combustible gas detector and a temperature sensor. The combustible gas detector is mounted on the engine exhaust pipe bracket and is used to detect the concentration of combustible gases in the external environment. The temperature sensor is mounted on the fireproof cover and is used to detect the temperature inside the engine exhaust pipe. Both the combustible gas detector and the temperature sensor are connected to the input terminal of the controller.

[0039] The first drive module includes an air source, a first electronically controlled valve, and a first cylinder; the bottom of the first cylinder is mounted at an angle on the fireproof cover, the piston rod of the first cylinder is connected to the second rainproof cap bracket, the first cylinder is also connected to the air source through a first air supply pipe, and the first electronically controlled valve is mounted on the first air supply pipe.

[0040] The second drive module includes a second electronically controlled valve and a second cylinder; the second cylinder is located inside the engine exhaust pipe at the fireproof cover, the piston rod of the second cylinder is connected to the fireproof handle, the second cylinder is also connected to the air source through a second air supply pipe, and the second electronically controlled valve is installed on the second air supply pipe.

[0041] In addition, the fireproof and rainproof device also includes a wind vane, a fixed gear, and a rotary motor. The wind vane is mounted on the engine exhaust pipe bracket and is also connected to the input end of the controller. The fixed gear is fixedly mounted on the outer periphery of the engine exhaust pipe below the sleeve. The rotary motor has a rotary gear fixed on its output shaft. The rotary gear and the fixed gear are meshed and connected. The rotary motor is also connected to the output end of the controller.

[0042] like Figure 3 As shown, the present invention provides a fireproof and rainproof method for an engine exhaust system, comprising:

[0043] S1. Activate the rainproof detection module, fireproof detection module, and wind vane to detect the operating information of the engine exhaust system and external environmental information, and upload them to the controller;

[0044] S2. The controller determines whether the sleeve needs to be rotated based on external environmental information. If so, the controller drives the rotary motor to rotate the sleeve to the target position.

[0045] S3. The controller controls the opening of the rain cap through the first drive module and controls the fireproof module to perform actions through the second drive module based on the received engine exhaust system operation information and external environment information.

[0046] The wind vane detects the wind direction information at the location of the engine exhaust system. Based on the wind direction information, the controller drives a rotary motor to rotate the sleeve to the target position, thereby adjusting the opening direction of the rain cap and making the engine exhaust direction downwind.

[0047] Specifically, the concentration of combustible gas in the vehicle's working area is detected by a combustible gas detector and fed back to the controller. After analysis by the controller, if the concentration of combustible gas in the vehicle's working area reaches a preset concentration, the controller sends a control command to the second electronic control valve. The second electronic control valve controls the action of the fireproof handle inside the fireproof cover to extinguish sparks and prevent the occurrence of fire.

[0048] In addition, when the engine is off, the rain cap is closed to prevent rainwater from entering the exhaust pipe while the vehicle is parked. When the engine is powered on via the ignition switch, the rain cap automatically opens to a preset angle. This invention uses a wind vane to determine the wind direction at the vehicle's location, and the controller adjusts the opening direction of the rain cap via a rotary motor, ensuring the engine's exhaust direction is with the wind, guaranteeing unobstructed exhaust flow without wind resistance. This invention uses a gas flow sensor to measure the engine's exhaust volume, and the controller adjusts the rain cap opening based on the exhaust flow rate to ensure smooth exhaust. Furthermore, when the vehicle is operating in rainy weather, a rain sensor measures the rainfall, and a gas flow sensor measures the engine's exhaust volume. The controller comprehensively analyzes the measured rainfall and engine exhaust volume, and adjusts the rain cap opening appropriately based on the analysis results to prevent rainwater from entering the exhaust pipe.

[0049] To reduce the risk factor of vehicles working in flammable and explosive work areas, an intake shut-off valve is installed in the corresponding intake pipe of the engine in this invention. The intake shut-off valve is connected to the output terminal of the controller. When the concentration of the detected combustible gas reaches a preset concentration and the temperature in the exhaust system reaches a preset temperature, the controller controls the shut-off of the intake shut-off valve to force the engine to stop, thereby forcing the engine exhaust system to cool down and preventing fire accidents.

[0050] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.

Claims

1. A fireproof and rainproof device for an engine exhaust system, the engine exhaust system comprising an engine exhaust pipe bracket and an engine exhaust pipe, the engine exhaust pipe being fixed to the engine exhaust pipe bracket, one end of the engine exhaust pipe being connected to the engine exhaust port, and the other end of the engine exhaust pipe being connected to the atmosphere, characterized in that, It includes a sleeve, a rainproof detection module, a rainproof cap, a fireproof detection module, a fireproof module, a first drive module, a second drive module, and a controller; The sleeve is fitted onto the outside of the engine exhaust pipe; A first rain cap bracket is fitted around the sleeve at the exhaust port of the engine exhaust pipe. A second rain cap bracket is hinged to one end of the first rain cap bracket. A rain cap is installed on one end of the second rain cap bracket. The other end of the second rain cap bracket is connected to a fireproof module located below the first rain cap bracket through a first drive module. Both the rainproof detection module and the fireproof detection module are connected to the input terminal of the controller. The output terminal of the controller is connected to the rainproof cap through the first drive module, and the output terminal of the controller is also connected to the fireproof module through the second drive module. It also includes a wind vane, which is mounted on the engine exhaust pipe bracket and is also connected to the input of the controller; It also includes a fixed gear and a rotary motor. The fixed gear is fixedly installed on the periphery of the engine exhaust pipe below the sleeve. The rotary motor has a rotary gear fixed on its output shaft. The rotary gear and the fixed gear are meshed and connected. The rotary motor is also connected to the output end of the controller.

2. The fireproof and rainproof device for an engine exhaust system according to claim 1, characterized in that, The fireproof module includes a fireproof cover and a fireproof handle. The fireproof cover is located below the first rainproof cover bracket, and the fireproof handle is located inside the engine exhaust pipe inside the fireproof cover. The fireproof handle is connected to the output terminal of the controller through the second drive module.

3. The fireproof and rainproof device for an engine exhaust system according to claim 2, characterized in that, The rain detection module includes a rain sensor and a gas flow sensor. The rain sensor is mounted on the second rain cap bracket and is used to detect the amount of precipitation in the external environment. The gas flow sensor is mounted below the fireproof cover and is used to detect the engine's exhaust volume. Both the rain sensor and the gas flow sensor are connected to the input terminal of the controller.

4. A fireproof and rainproof device for an engine exhaust system according to claim 2, characterized in that, The fire detection module includes a combustible gas detector and a temperature sensor. The combustible gas detector is mounted on the engine exhaust pipe bracket and is used to detect the concentration of combustible gases in the external environment. The temperature sensor is mounted on the fireproof cover and is used to detect the temperature inside the engine exhaust pipe. Both the combustible gas detector and the temperature sensor are connected to the input terminal of the controller.

5. A fireproof and rainproof device for an engine exhaust system according to claim 2, characterized in that, The first drive module includes an air source, a first electronically controlled valve, and a first cylinder; The bottom of the first cylinder is mounted at an angle on the fireproof cover. The piston rod of the first cylinder is connected to the second rainproof cap bracket. The first cylinder is also connected to the air source through the first air supply pipe. The first electronically controlled valve is installed on the first air supply pipe.

6. A fireproof and rainproof device for an engine exhaust system according to claim 5, characterized in that, The second drive module includes a second electronically controlled valve and a second cylinder; The second cylinder is located inside the engine exhaust pipe at the fireproof cover. The piston rod of the second cylinder is connected to the fireproof handle. The second cylinder is also connected to the air source through the second air supply pipe. The second electronically controlled valve is installed on the second air supply pipe.

7. A method for a fireproof and rainproof device for an engine exhaust system according to any one of claims 1-6, characterized in that, include: The rain detection module, fire detection module, and wind vane are activated to detect the operating information of the engine exhaust system and external environmental information, and the information is uploaded to the controller. The controller determines whether the sleeve needs to be rotated based on external environmental information. If so, the controller drives the rotary motor to rotate the sleeve to the target position. The controller controls the opening of the rain cap through the first drive module and controls the fireproof module to operate through the second drive module, based on the received operating information of the engine exhaust system and external environment information. It also includes a wind vane, which is mounted on the engine exhaust pipe bracket and is also connected to the input of the controller; 8. The method for a fireproof and rainproof device for an engine exhaust system according to claim 7, characterized in that, The wind vane detects the wind direction information at the location of the engine exhaust system. Based on the wind direction information, the controller drives the rotary motor to rotate the sleeve to the target position, thereby adjusting the opening direction of the rain cap and making the engine exhaust direction downwind.

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